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ASUS P4P800S SE motherboard user guide
2-17
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AI Overclock Tuner [Manual]
CPU External Frequency (MHz) [100]
DRAM Frequency [Auto]
AGP/PCI Frequency (MHz) [Auto]
CPU VCore Voltage [Auto]
Performance Mode [Auto]
Configure System Frequency/Voltage
CPU External Frequency (MHz) [XXX] (value is auto-detected)
Indicates the frequency sent by the clock generator to the system bus and PCI
bus. The bus frequency (external frequency) multiplied by the bus multiple equals
the CPU speed. The value of this item is auto-detected by BIOS and is not
manually configurable. The values range from 100 to 400. Refer to the following
table for the correct Front Side Bus and CPU External Frequency settings.
Front Side Bus CPU External Frequency
FSB 800 200 MHz
FSB 533 133 MHz
FSB 400 100 MHz
Table 2.4.1 FSB/CPU External Frequency Synchronization
DRAM Frequency [Auto]
Allows you to set the DDR operating frequency depending on the CPU installed.
Configuration options: [266 MHz] [Auto]: for FSB 400 CPU, [333 MHz] [266MHz]
[Auto]: for FSB 533 CPU, [533MHz] [500 MHz] [400 MHz] [320 MHz] [266 MHz]
[Auto]: for FSB 800 CPU.
AGP/PCI Frequency (MHz) [Auto]
Allows you to adjust to a higher AGP/PCI frequency for better system performance
and overclocking capability. Configuration options: [Auto] [66.66/33.33]
[72.73/36.36] [80.00/40.00]
Selecting a very high AGP/PCI frequency may cause the system to become
unstable! If this happens, revert to the default setting.
Refer to the CPU documentation before setting the CPU VCore voltage. A very
high Vcore voltage may severely damage the CPU!
CPU VCore Voltage [Auto]
Allows you to select a specific CPU VCore voltage. Configuration options: [Auto]
[1.9500V] [1.9250V] [1.9000V] [1.8750V] [1.8500V] [1.8250V] [1.8000V] [1.7750]
[1.7500V] [1.7250V] [1.7000V] [1.6750V] [1.6500V] [1.6250V] [1.6000V]